Update postgis/postgis Docker tag to v17

.env

@@ -25,7 +25,7 @@ LAMASSU_FEED_CACHE_MINIMUM_INTERVAL_IN_S=21600
 REDIS_MEMORY_MB=1024
 
 # ipl-db variables
-IPL_POSTGIS_IMAGE=postgis/postgis:15-3.4-alpine
+IPL_POSTGIS_IMAGE=postgis/postgis:17-3.4-alpine
 IPL_POSTGRES_DB=geoserver
 IPL_POSTGRES_USER=geoserver
 
@@ -111,7 +111,7 @@ OCPDB_CELERY_BROKER_URL=amqp://rabbitmq/ocpdb
 OCPDB_PRIVACY_URL=https://www.nvbw.de/datenschutz
 OCPDB_LEGAL_NOTICE_URL=https://www.nvbw.de/impressum
 OCPDB_IMAGE=ghcr.io/binary-butterfly/ocpdb:1.2.1
-OCPDB_DB_IMAGE=postgis/postgis:15-3.4-alpine
+OCPDB_DB_IMAGE=postgis/postgis:17-3.4-alpine
 
 # ParkAPI
 PARK_API_API_PORT=7500
@@ -120,7 +120,7 @@ PARK_API_POSTGRES_DB=park-api
 PARK_API_POSTGRES_HOST=park-api-db
 PARK_API_CELERY_BROKER_URL=amqp://rabbitmq/park-api
 PARK_API_IMAGE=ghcr.io/parkendd/park-api-v3:0.16.2
-PARK_API_DB_IMAGE=postgis/postgis:15-3.4-alpine
+PARK_API_DB_IMAGE=postgis/postgis:17-3.4-alpine
 
 # Caddy
 CADDY_IMAGE=caddy:2.8.4-alpine